Process reddit posts through Google NLP

[kyletaylored]

In a single API call, I think you can extract Entity and Sentiment analysis. Will need to figure out how to utilize Content Categorization.

https://cloud.google.com/nodejs/docs/reference/language/1.2.x/module-@google-cloud_language

Store results back to local post object (or online like jsonstore.io?). Since we can use the Post ID as a key, if we get the post again, we can check for results instead of wasting API calls.